Determine shoe size according to your regular foot size.
(You will need help for this part!)
Wear your breeches and socks. In a sitting position, using your measuring tape, measure the widest part of the calf. It is easier to measure in inches then convert to centimeters. Always go up one cm in the calf measurement when ordering. In the same sitting position, measure the side of the leg from the floor to the indentation between the leg and the knee. It is easy to “feel” for this area on the side of the leg add 3 cm. This is the leg height of the boot.